Kang told CNN: "They let it fire against these two people and these two people instantly disappeared and all the blood, it poured into Jang Song-thaek's face, who was forced to witness them and he fainted."

Kim's uncle was killed later that same year reportedly by the same method after branding him a traitor.

The shocking claims form part of a new report from the North Korea Strategy Center, a human rights organisation led by Kang.

He also told how the despot also executed a top police official who was also close to his uncle .

Kang said: "Kim Jong-un especially hated him (the police official) so ordered him to be executed by using a flame-thrower so he was burned alive without even using the machine guns.

"Then after he was burned alive the tanks around him kind of crushed him."

He then claimed another official and his mistress were executed by being stripped naked and torn apart by the dogs.

GRISLY EXECUTIONS

All these bizarre and grisly executions were carried out on the personal orders of despotic Kim, claims Kang.

Greg Scarlatoiu, exec director of The Committee for Human Rights in North Korea (CHRNK), said: "These people who were executed by ZPU-4 anti-aircraft guns or flame throwers are denied this fundamental right of leaving behind a body for the family."

In 2014, the CHRNK unveied “a ghastly sight” at a military firing range: analysed satellite images showed six anti-aircraft gun systems being fired upon a small target at short range.

The group assessing the bizarre scene decided it was an execution that had been watched by high-level officials who’d driven in from the capital of Pyongyang.

“Anyone who has witnessed the damage one single US .50 caliber round does to the human body will shudder just trying to imagine a battery of 24 heavy machine guns being fired at human beings.

Bodies would be nearly pulverised,” the report reads. “The gut-wrenching viciousness of such an act would make ‘cruel and unusual punishment’ sound like a gross understatement.”

Most of the time, the victims of this brutality are unknown, but there is no shortage of past examples.

In 2012, a shocked international press reported that a military officer was sentenced to death for drinking during the official mourning period for Kim’s father, Kim Jong-il.

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